Add web app model, service to fetch metadata

db/migrate/20231019125135_create_app_catalog_web_apps.rb

@@ -0,0 +1,11 @@
+class CreateAppCatalogWebApps < ActiveRecord::Migration[7.0]
+  def change
+    create_table :app_catalog_web_apps do |t|
+      t.string :url
+      t.string :name
+      t.text   :metadata
+
+      t.timestamps
+    end
+  end
+end